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'PLATEN PRINTING PRESS. No. 523,006. Patented July 17,1894.

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PLATEN PRINTING PRESS.

N0. 523,006. Patented July 17, 1894.

WITNESSES INVENTC" E- jy fiat 7WQ/@L MIU NEY umn. WASHINGTON n c vUNITED STATES PATENT OFFI E.

WILLIAM H. PRICE, JR, OF CLEVELAND, OHIO, ASSIGNOR TO CHANDLER &

PRICE, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. seaooauateerul 17,1894.. Application filed November 29, 1892. Serial No. 458,547. (Nomodel.)

To all whom it may concern.-

Be it known that 1, WILLIAM H. PRICE, J r., of Cleveland, in the countyof Cuyahoga and State of Ohio, have invented certain new and usefulImprovements in Platen Printing Presses; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same. a

My invention relates to improvements in platen printing presses, andmore especially to mechanism for shifting the bed and platen toward andfrom each other, whereby may be effected by means of shifting either thebed, or the platen, such slight changes as would be necessary inprinting paper of different thicknesses, or in printing alternately,paper and thin cardboard; and by shifting both the bed and the platen,greater changes can be efiected, such as would admit of printing onheavy card-board or on bound pamphlets, &c. As my invention pertainsonly to the platen and bed and mechanism connected therewith, it is notconsidered necessary to illustrate or describe only these two members,and my improved attachments connected therewith, the generalconstruction of the press being substantially as heretofore used. In theaccompanying drawings Figure 1 is a side elevation, partly in section ofthe bed and platen in position closed and with my improved mechanismattached. Fig. 2, is a plan of the platen and the so-called rocker, andmy improved attachments. Fig. 3, is an elevation, showing the rocker andattachment with the platen removed, the securing bolts being shown insection. Figs. 4: and 5 are plans in detail of different trains ofgearing, that may respectively be used to advantage in carrying out myinvention, whereby the securing bolts of the platen or of the adjustable section of the bed, may be operated in unison by means of asingle worm shaft.

A, represents the platen of the printing press, and A, the axle shaftthereof. Shaft A, bears a so-called rocker, the latter being constructedusually of cast iron and comprising a long sleeve A usually cast on toshaft A, this sleeve having integral cars a,

usually four in number and arranged as shown in Fig. 1. The securingbolts B,-are screwthreaded at each end thereof, and these bolts engagescrew-threaded holes in the platen and extend into the platen somedistance. Heretofore these bolts extended loosely through holes in therespective ears on with nuts on either side of the ears, (see Fig.1 ofPatent No. 399,282, granted to me March 12, 1889,)

and by manipulating these nuts the platen was adjusted toward or fromthe bed. It was a matter requiring considerable time and care toproperly adjust the platen by such means.

Various devices have been provided for making slight adjustments of thebed or platen toward and from each other without disturbing the securingbolts, for instance see Patent N 0. 469,215 of February 16, 1892, andwithout losing the alignment of these members relative to each other.

My present invention for this purpose is as follows: Ears a. are boredsomewhat larger than bolts B, and these holes in the ears are screwthreaded to receive sleeves D, the sleeves being correspondinglyscrew-threaded externally. Each sleeve has a head or section D, fittedto engage a wrench, the heads being usually hexagonal. Bolts B extendwith an easy fit through the bore of the respective sleeves D, and atthe rear of a sleeve, each bolt is provided with a jam-nut as at B. InFig. 2 a bolt B is shown, that is supposed to be screw-threaded theentire length thereof.

The screw-threads along the central portion of the bolt are not wanted,but the bolts being short and the screw-threading having been done in alathe, it was easier to cut the threads the entire length of the bolt,than to thread the two ends thereof separately. On each bolt next insidethe sleeve is rigidly mounted a spur gear I). The hub of each gear 11,is supposed to engage the inner end of the opposing sleeve D, and withthe jamnut (B) of the bolt, engaging the other end of the same sleeve,it is evident, first, that the bolt could be adjusted endwise by turningthe sleeve on its axis, or second, that by turning all of the gears b inunison, in the one g by turning these bolts on their axes, the platencan be movedtoward or from the bed.

The manner of intergearing or connecting the different gears 17, so thatthey will turn in unison may be varied indefinitely, according tocircumstances. For instance in Fig. 3,

the four gears b are engaged in pairs,and the two gears of a pair engageopposite sides of a worm c, the two worms having a shaft 0 in common.The one end of the shaft is squared as at C, for engaging a wrench orkey for turning the shaft whereby the gears b, are rotated in unison.

With the construction shown in Fig.3, the

bolts B on opposite sides of the worm must be respectively right andleft handed where they screw into the platen.

In Fig. 4, the four gears b',engage in common a gear F, the latter beingj ournaled on stud f. & With such construction the bolts all turn in onedirection, and hence, these bolts are all screw-threaded alike, eitherright handed or I left'han'ded, as may 'be preferred. Also but one wormis required, and it may engage either of the gears, and the axis of theWorm may be horizontal or vertical (see worms in solid and dottedlines), according to where it is most convenient to extend the wormshaft for accessibility in manipulating the same.

engaged by the worm a. Each gear G is mounted on an axial stud g. Withsuch construction the worm shaft can extend upward or downward to theedge of the platen whichplaten.

use whichever arrangement is best adapted to the construction of theplaten in regard to the arangement of ribs, flanges, &c., of the platen.

sections E and E, for locating therein the gearing arranged in a similarmanner to that already described in connection with the platen, that isto say, sections E and E, are connected by bolts 6. bolt screws into athreaded hole in member rear ends of the bolts'are provided with nuts6', these nuts engaging the rear side of mem- 1' ber E. Each bolt 6bears a gear I), the hub of which engages the front side of member E,and the four gears b are intergeared or operatively connected,substantially as in the case The bed I construct in two sections, E andE, there being space enough between The one end of each O, supposed tobearone or more worms 0, for operating the train of gears, section E ofthe bed may be moved toward or from the platen.

In constructing the diderent gears I make them fiat faced instead ofconcaving the faces like ordinary worm gears, hence the worm willoperate anywhere along the face of the gear, consequently it is notnecessary for the worm to move sidewise to keep pace with the endmovement of the holes and attached gears. However I cut the teeth onthese gears with a slight spiral lead to correspond with the lead of thethreadsof the worm.

It will be borne in mind that it is intended, as aforesaid, to move theplaten or the section E of the bed, only a very short distance, and forordinary work where only different thicknesses of paper and thin cardboard are used, it would not-be necessary to have both the platen andbed section adjustable in the manner aforesaid, but it frequently occursthat a greater range of adjustment is required than could be had byadjusting the platen or the bed, alone.

As is well known manufacturers and wholesale dealers frequently havelarge numbers of pamphlets printed and bound to send their retailcustomers for distributiom'and' they wish to have the name of suchretail customer printed on the outside of the cover of :such pamphlet.In such cases very likely both the aforesaid adjustments would berequired. In adjusting thepress in the first instance the platen andsectionE', of the bed, are In Fig. 5, next adjacent gears 19 engage incommon a gear G and these two gears G are first advanced toward eachother almost their full throw. After this the sleeves D are adjusted tobring the platen and bed the required distance apart for printing, saythin paper such as used for ordinary printing, after which by meansaforesaid, by backing the bed or the platen or both, these members arefurther separated as may be necessary, according to the work.

I may add that the gears b, F and g and the worms may be made and keptin stock 1 in quantities, and used alike on the platen and the bed. Alsothe bed might be provided with sleeves D, but it is not necessary tohave both the platen and the bed provided with these sleeves.

What I claim is 1. In a printing press, the combinationwith the platenand rocker, said platen having screw threaded sockets, of the externallythreaded sleeves having nuts at their outer ends, screw-threaded boltsfor engaging the E, and the other ends of these bolts extend looselythrough holes in member E, and the sockets at one end and provided withnuts at the other end, the gear wheels mounted on the said bolts and theworm-gearing, whereby said gear wheels are operated simultaneously toadjust the platen, substantially as specifled.

2. In a printing press, the combinationwith a bed constructed in twosections, one section 65 of the platen, so that by turning a rod asat-having screw-threaded sockets, of the bolts In testimony whereof Isign this specification, in the presence of two witnesses, this 15th 10day of November, 1892.

WILLIAM H. PRICE, JR.

Witnesses:

FRANK C. GREGG, G. P. NASH.

